diff --git a/QA.md b/QA.md
index 4f37879..e2a6fac 100644
--- a/QA.md
+++ b/QA.md
@@ -18,6 +18,8 @@ The behaviors of the console are tested in [Console section](#consoles).
 
 - [ ] <kbd>r</kbd>: reload current tab
 - [ ] <kbd>R</kbd>: reload current tab without cache
+- [ ] <kbd>g</kbd><kbd>h</kbd>: open start page on current tab
+- [ ] <kbd>g</kbd><kbd>H</kbd>: open start page to new tab
 
 #### Misc
 
diff --git a/e2e/contents/tab.test.js b/e2e/contents/tab.test.js
index bfc22ea..3c98dc9 100644
--- a/e2e/contents/tab.test.js
+++ b/e2e/contents/tab.test.js
@@ -23,6 +23,19 @@ describe("tab test", () => {
     expect(actual.tabs).to.have.lengthOf(before.tabs.length - 1);
   });
 
+  it('deletes tabs to the right by D', async () => {
+    let tab1 = await tabs.create(targetWindow.id, CLIENT_URL + '#1');
+    await tabs.create(targetWindow.id, CLIENT_URL + '#2');
+    await tabs.create(targetWindow.id, CLIENT_URL + '#3');
+
+    let before = await windows.get(targetWindow.id)
+    let tab = await tabs.selectAt(targetWindow.id, tab1.index)
+    await keys.press(tab.id, 'D', { shiftKey: true });
+
+    let actual = await windows.get(targetWindow.id);
+    expect(actual.tabs).to.have.lengthOf(before.tabs.length - 2);
+  });
+
   it('duplicates tab by zd', async () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL);
     let before = await windows.get(targetWindow.id)
diff --git a/src/background/usecases/operation.js b/src/background/usecases/operation.js
index dd24e75..73e4111 100644
--- a/src/background/usecases/operation.js
+++ b/src/background/usecases/operation.js
@@ -193,11 +193,15 @@ export default class OperationInteractor {
     let tab = await this.tabPresenter.getCurrent();
     let result = await browser.browserSettings.homepageOverride.get({});
     let us = urls.homepageUrls(result.value);
+    if (us.length === 1 && us[0] === 'about:home') {
+      // eslint-disable-next-line max-len
+      throw new Error('Cannot open Firefox Home (about:home) by WebExnteions, set your custom URLs');
+    }
     if (us.length === 1 && !newTab) {
       return this.tabPresenter.open(us[0], tab.id);
     }
     for (let u of us) {
-      this.tabPresenter.create(u, { openerTabId: tab.id });
+      this.tabPresenter.create(u);
     }
   }
 }